Juice extractor



meme Feb. 5, 1946 UNITED STATES PATENT OFFICE 2,394,459

JUICE EXTRACTOR Phillip Markowitz, Homestead, Fla. Application July 2, 1943, Ser1al No. 493,268

4 Claims.

Still another important object is to provide an v especially sanitary take-apart assembly wherein the portions of the assembly coming-into contact with trlturated material, residues and juices, may be readily emptied and cleaned.

Yet another object is to provide a novel juice extractor, wherein parts of the extractor have dual functions.

Another object is to provide a novel sanitary covering for metallic portions of conventional triturating apparatus.

Other objects and advantages of this invention will be apparent during the course of the following detailed description, taken in connection with the accompanying drawing and in which drawing:

Figure l is a side elevationof the novel extractor.

Figure 2 is a top plan of a portion of the juice squeezing means.

Figure 3, 4, and 5 are perspective views on a larger scale of portions of a novel support means forming apart of the extractor.

Figures 6 and 7 are fragmentary sections on a still larger scale showing two positions of parts of the operating assembly of the extractor.

Figure 8 is a view partly in vertical section and partly in elevation of a portion of the juice squeezing means.

Figure 9 is a vertical section through a portion of a metallic grinding means, rendered sanitary by a, protective covering.

In the drawing, wherein for the purpose of illustration is shown a preferred embodiment of the invention and wherein similar reference characters designate corresponding parts throughout the several views, the letter A may designate generally the extractor; B, a container for the grinding means C for triturating juicecontaining material; D, a support for the container 13; E, means for operating the grinding means C; F, means for receiving triturated material from B and squeezing juice therefrom; and 55 the front section, with the section'45 mounted G, means for rendering the grinding-means sanitem.

The container B is of conventional construction and includes a hopper portion In leading to a, downwardly-opening discharge way 'I I, having side walls l2 and I3 and end walls Id. The side wall I3 is the rearmost and flares or slopes downwardly and outwardly from the side wall l2, as shown in Figure 7. These walls l2, I3 and I extend below the general bottom l5 of the hopper ll. Preferably, the container B is of a hardened plastic, which may be transparent.

Grinding means C may also be of conventional construction and include a grinding wheel or disc 20 within the hopper ll, rotating on a substantially horizontal axis, supported by a, carrier or rotor 2| mounted upon a spindle 22, for rotation. The spindle 22 extends through the rear wallof the container B and may be provided with a socket member 23 at its free end, exteriorly of the container B, the member 23 having an outwardly-op'ening conical socket 24. In conventional construction, the grinding wheel is usually of stone or Carborundum and the carrier 2| and spindle 22 of metal.

Now as for the support D for the container B, this is of novel construction and includes a rectangular stationary member 25 shown particularly in Figure 5, a substantially T-shaped stationary member 26, mounted upon the member 25, and shown particularly in Figure 4, a slidable plate member 21, shown particularly in Figure 3,

) mounted upon the member 26, legs 28, supporting the members 25 and 26, and a base 29 for the legs 28.

The rectangular stationary member 25 is provided with vertical front and rear faces 30 and 3| vertical end faces 32 and 33 and fiat top and bottom faces 34 and 35 and may be a solid block of material, such as wood. Adjacent the end faces 32 and 33 there are two perforations 36 from the face to the face 35 for the upper ends of the legs 28 and centrally of the end faces 34 and 35 is a slot or opening 31, having substantially vertical end faces 38 and 39, one substantially vertical side face 40 and a stepped side face 4| opposite the face 40. The upper section 42. of this side face 4| extends downwardly away from the face 40 as shown in Figures 5 to 7. Forwardly of the slot 31 is a socket 43. The bottom face 35 has a function to be subsequently explained.

The T-shaped stationary member 26, may comprise a sheet of suitable material, fashioned into a front section and a rear section 46, joining upon the member 25 and having downturned side flanges 41 and 48, and the rear section may have opposite downturned end flanges 49. Extending from the upper face 58 to the lower face of the section 45 is a centrally-disposed slot or opening 53 aligning with the slot 31, two perforations 52, aligning with the perforations 35 a perforation 54, aligning with the socket 43 and ad- Jacent the far side of the rear section 45 may be a slot 55 extending from the upper face 55 to the lower face 51, to accommodate the handle 58 of a conventional toggle electric switch 59 mounted upon the underside of the section 45 in any approved way. The upper faces 55 and 51 are preferably smooth.

As for the slidable plate'member 21, this is disposed with its longitudinal axis normal to the longitudinal axis of the member 25 and is mounted for sliding over the faces 58 and 55. It has down-turned front and rear flanges or stops 58 and 5|, a slot or opening 52 sometimes aligning with the slots 31 and 53 and having upturned parallel flanges or guides,53 and a front flange or guide 54 providing with an arcuate cut out for accommodating an arcuate lower portion of the container- B. At the rear of the slot 52 is in contact with a wall of the slots 31 and 52.

. The flanges or guides 53- assist in guiding the way I I into the slots. Preferably, when the parts are as shown in Figure 8, the container B may be bodily lifted from the support D for cleaning or other purposes. However, when the slidable plate member 21 is drawn or pulled forwardly, so that the downturned flange 55 engages the wall l3 of the discharge way H, as shown in Figure '1, the container B cannot be removed and is' held against undesirable vibrations when wardly, so that current will flow from any suita flange which slopes downwardly and rearwardly, as in Figures 6 and'7. There is also a rearwardly-disposed slot 55 adapted to align with the slot 55, but not always aligned therewith, as will be subsequently explained. The handle 58 extends through this slot 55. Mounted upon the plate member 21 is a latch means 51 including a plunger 58 adapted to be spring-urged into the socket 43 and otherwise retained in an inoperative position within the perforation 59 in the plate member 21 with its end in contact with the upper face 55. Projecting outwardly from the front end of the slidable member 21 is a suitable handle 18 which 'may be a continuation of the material forming the plate member, shaped as shown in Figures 3, 6, and 'l. The length of the slidable member 21 is greater than that of the stationary member 25, measured from front to rear thereof. Suitable guides 1| may be provided, mounted upon the stationary member 25, to guidethe sliding of the member 21. 'Except for the flanges 53 and 54 the upper face 12 of the slidable plate member 21 is smooth and flat.

The legs 28 are, preferably, two in number, of smooth exterior and tubular construction, have any suitable means to secure them at their upper ends to the members 25 and 25 and any suitable means to secure them to the base 29. w

The means E for operating the grinding means C may be a prime mover, such as an electric motor 15, mounted firmly upon the rearward portion of the slidable plate 21 intermediate the slots 52 and 55, and has a shaft 15 provided with a conical end 11 adapted to enter the socket 24 and grip the walls thereof for rotation of the socket member 23, spindle 22, carrier 2! and grinding wheel 28. Extending from the motor 15 to the switch 59 is a suitable conductor I8 of electricity.

At this point, coaction and operation of the elements B, C, D and E will be explained. The container B is adapted to rest upright and in an operative position upon the upper face 12 of the slidable plate'member' 21 of the support C, and with the discharge way H in the slots or openings 31, 53 and 52, as shown in Figures 6 and '1. It will be noted that the lower end of the side wall |3 abuts the lower end of the rear wall of the slot 31 and that the, opposite side wall I 2 is a-ble source of electricity, through the, switch 59 through the-conductor 18, to the windings of the motor 15, throughconductor 18, switch 59 and to the source.- Pushing back the slidable plate 21 will, of course, uncouple the motor and grinding means and open the electric switch as is now apparent. The latch means 51 functions to retain the slidable plate 21 in its forward position (when the plunger 58 enters the socket 43 of the stationary member 25) until hand unlatched, as is apparent. Triturated material drops through the way H and enters the means F which will be next described.

The means F for receiving triturated material and squeezing the same to extract juice includes two preferably transparent glass or plastic members 88 and 8|, shown particularly in Figure 8. The first is a vessel having an open mouth 52 and, preferably. an outwardly and upwardly extending rim 83, a perforated vertical wall section 84 provided with substantially horizontally-disposed.

perforations, a vertical way 85 extending from this wall section 84 and a juice discharge nozzle or spout 85 communicating with the way 85 at the bottom thereof, as shown in Figure 8. Material from the way drops into the chamber 81 in the vessel member 58, whereupon the member 8|, which is a plunger, is inserted into the vessel member 88. The member 8| has a flat bottom 88, a flange 85'kat its upper end, adapted to cooperate with the rim 83, and a flat upper face 89. The

body 98 of the plunger member 8| fits snugly but slidably in the chamber 81. The member88 is removably disposed upon a, substantially horizontal platform 9| which has a pair of perforations 92 through which the legs 28 extend, so that the platform 9| may move upwardly and downwardly. For raising and lowering the platform 9|, any suitable means may be provided, as a conventional hydraulic or air lift 93 with fittings 94 and conventional four-way valve 95. With the triturated material in the vessel member 88 and the plunger member 8| also in the member 98, with its bottom 85 resting upon the material, when the platform 9| is raised, the upper face 59-,will contact the bottom face 35 of the stationary member 25 and continued upward movement of the platform-9| will force the plunger member 8| downwardly upon the material and squeeze the juice therefrom, which will flow through the perforations in the wall section 84, way and out of the spout 85 whereupon the members 8| and 98 are lowered.

So that the.conventional grinding apparatus may be rendered more sanitary,-there may be provided the means G shown in Figure 9. This comprises a plastic (or non-metallic) grinding wheel I00 adapted to fit over the conventional wheel 20 and secured thereto by a non-metallic screw llll and a formable plastic housing or casing I02 for the carrier 2| and portion of spindle 22 within the hopper portion l0, secured to the conventional metallic carrier and spindle as by strong rubber bands I03.

From the foregoing it may be seen that the container B and the members 80 and 8| may be readily removed for cleaning that, otherwise, especial emphasis has been laid on sanitation, yet a compact and readily operated assembly has been provided, either for counter use or for larger-scale production of fruit and vegetable juices,

Various changes in the shape, size and arrangement of parts may be made to the form of invention herein shown and described, without departing from the spirit of the invention or the scope of the following claims.

What is claimed is:

1. In a juice extractor, means for triturating juice-containing material, including a grinder apparatus, a container for'said grinder apparatus and material, having four walls defininga downwardly-opening discharge way, one of said walls extending diagonally away from its facing wall; a support for said container, including a stationary portion having an opening aligning with said discharge way, and with the lower portions of said walls disposed snugly within said opening, and a horizontalLy-reciprocable portion carried upon said first-named portion and provided with an opening through which said walls extend, portions of the under side of said container being in frictional engagement with the upper face of said horizontally-reciprocable portion; means for releasably retaining said container against vertical movement, including a downturned wall extending diagonally from said reciprocable portion, disposed within said first-named opening, facing said first-named diagonal wall, and slidable with said reciprocable portion into and out of contact with said first-named diagonal wall; and means for operating said grinding apparatus, including a prime mover rigidly mounted upon said horizontally-reciprocable portion and having a shaft movable, upon reciprocation of said horizontallyreciprocable portion, into engagement with said apparatus, as said down-turned wall moves into contact with said first-named diagonal wall.

2. In a support for a device having a discharge mouth extending below the general bottom of the device, with one wall of said mouth diverging downwardly and away from the other walls thereof, a stationary support member, having a. slot accommodating said mouth with the walls of said mouth abutting at least portions ofthe walls of said slot, said diverging wall abutting a wall of said slot at adjacent the bottom of said diverging wall, legs for said stationary support member, a slidable support member having a slot accommodating said walls of said mouth, and a downturned flange facing and paralleling said diverging wall and normally spaced therefrom, said slidable support adapted to support said device, and means for moving said slidable support member forwardly and rearwardly, with said device stationary, so that said flange will engage said diverging wall when said slidable member is moved forwardly and disengage said diverging wall when moved rearwardly.

3. In a duel support for an electric motor having a shaft, and a device having a housing containing a rotor provided with a spindle having means for'coupling said shaft thereto, and having a discharge way extending below the general bottom of the housing and provided with an outwardly flaring wall, a stationary support member having a slot accommodating-said way, a slidable support member, mounted upon said stationary support member, for forward and rearward oscillation, havin a slot accommodating said way, with the remainder of said device above said slidable support member, and a flange extending downwardly into both of said slots and flaring in a direction to face and parallel said flaring wall, said flange being normally spaced from said wall, said slidable support member having said motor fixedly mounted thereon to the rear of said device, with the axes of rotation of said shaft and spindle aligned, with said shaft and said coupling means normally spaced apart; and means for oscillating said slidable support member with said device stationary, so that said flange will move into engagement with said flaring wall and said coupling means and said shaft will couple when said slidable support member is moved forwardly, and said flange will move away from said flaring wall and said coupling means and shaft will uncouple when said slidable support member is moved rearwardly.

4. In a dual support for an electric motor having a shaft, and a device having a housing containing a rotor provided with a spindle having means for coupling said shaft thereto, and having a discharge way extending below the general bottom of the housing and provided with an outwardly flaring wall, a stationary support member having a slot accommodating said way; an electric switch mounted upon the bottom of-said stationary support; an electric conductor between said I switch and said motor; a slidable support member,

mounted upon said stationary support member, for forward and rearward oscillation, having a slot accommodating said way, with the remainder of said device above said slidable support member, and a flange extending downwardly into both of said slots and flaring in a direction to face and parallel said flaring wall, said flange being normally spaced from said wall, said slidable support member having said motor fixedly mounted thereon to the rear of said device, with the axes of rotation of said shaft and spindle aligned, with means will open said switch, and said coupling means and shaft will uncouple, when said slidable 70 support member is moved rearwardly.

PHILLIP MARKOWITZ. 

